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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: RÚT GỌN BIỂU THỨC a)(a^2+b^2-c^2)^2-(a^2-b^2+c^2)^2 b)(a+b+c)^2+(a+b-c)^2-2(a+b)^2 c)4(x+1)^2+(2x-1)^2-8(x-1)(x+10 d)(a+b+c)^2+(a-b+c)^2+(a+b-c)^2+(b+c-a)^2 { "@context": "https://schema.org", "@type": "QAPage", "mainEntity": { ...

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